Improvement in clutches for fly-wheels of sewing-machines



W. L. FISH. Clutch for Ply-Wheels of Sewing-Machines.

No. 214.246. Patented April 15, 1s79.'

PATENT OFFICE,

WARREN L. FISH, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN CLUTCHES FOR FLY-WHEELS 0F SEWING-MACHINES.

Specification forming part of Letters Patent No. 214,246, dated April15, 1879; application filed March 5, 1878.

To all whom it may concern Be it known that I, WARREN L. FISH, of thecity of Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Clutches for theFly-Wheels of Sewing-Machines; and I do herebydeclare that the followingis afull, clear, and exact description of the invention, which willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawing, and toletters of reference marked thereon, which form a part of thisspecification.

The nature and object of this invention are to operate the bobbinwinding attachment while the mechanism of the sewing-machine proper isat rest, and vice versa, without necessitating any expensive change inthe construction of a sewing-machine, such as the removal of some of thematerial parts thereof, and the substitution of new parts therefor.Another important advantage secured in this device is in its adaptationto most of the standard machines now in'use or being manu-' facturedwith which bobbin-winders are used, without increasing cost ofmanufacture.

The accompanying drawing illustrates the nature and character of theinvention, and

represents a sectional View of my improved fly-wheel and pulley,together with the driving-shaft and a suitable locking device forcoupling the wheel and pulley together when the machine is to beoperated, and uncoupling them when the bobbin-winder only is to beoperated, thereby relieving the bobbin winding appliances of the weightand momentum of the fiy-wheel, the fly-wheel being rigidly secured tothe main or driving shaft 0, as

usual.

The invention consists in the combination, with a sewing-machine, of afly-wheel, A, secured to the shaft, a loose pulley, B, carried by theshaft, but turning independently of the wheel A, and a locking device,described hereinafter, whereby the fly-wheel and pulley may be coupled.

- In carrying out my invention, the loose pulley B, it will be observed,is adjusted and revolves' upon the hub h of the fly-wheel A,

to which it is secured, when it is desired to operate thesewing-machine, by means of a suitable locking device, consisting, inthis instance, of an adjustable pin, b, which passes through a portionof the fly-wheel and enters the face of the pulley, as shown, or viceversa. A short supplementary pin, 01, attached to the head f of pin 1),and resting against the face of the fly-wheel, serves to retain said pinb, and prevent its contact with the pulley when the latter is uncoupledfrom the fly-Wheel, and a coiled spring, 0, serves to force said pin dagain in contact with the pulley, when desired, by turning the head f sothat the short pin 01 enters a hole, 0, all as shown and indicated inthe drawing.

It may be observed, however, that the loose pulley can be adjusted andrevolve directly upon the shaft, if desired, though I do not think itpreferable, and a simple screw, key, clamp, or any other appropriatemeans may be employed as a locking device without departing from theprinciple embodied in my invention; which having been thus described,

What I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a sewing-machine, of the fly-wheel A, securedto the shaft, the loose pulley carried by the shaft, but turningindependently of the wheel A, and a locking device whereby the pulleyand wheel may be locked together or disconnected, as set forth.

2. The combination, with the fly-wheel A, secured to the shaft 0 of asewingmachine, of the loose pulley B and springpin having a head, f, andpin d, adapted to an opening, e, as and for the purpose set forth.

3. The combination of the drivingshaft. a loose driving-pulley havingone or more recesses around and near its periphery, a balance-wheelfirmly secured to the drivingshaft and having a slot, and a springlocking-pin arranged in the balance-wheel and having a lateral stud,substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I hereto affix mysignature in presence of two witnesses.

WARREN L. FISH.

Witnesses OLIVER DRAKE, P. J. INSLEE.

